ZA924351B - Ozone bleaching process - Google Patents

Ozone bleaching process

Info

Publication number: ZA924351B
Authority: ZA; South Africa
Prior art keywords: bleaching process; ozone bleaching; ozone; bleaching
Prior art date: 1991-06-27

Application number

ZA924351A

Inventor

Brian Greenwood

Greenwood Brian

Kaj Henricson

Henricson Kaj

Original Assignee

Ahlstroem Oy

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1991-06-27

Filing date

1992-06-15

Publication date

1993-03-31

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24899960&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ZA924351(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1992-06-15 Application filed by Ahlstroem Oy filed Critical Ahlstroem Oy

1993-03-31 Publication of ZA924351B publication Critical patent/ZA924351B/en

Classifications

- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)

ZA924351A 1991-06-27 1992-06-15 Ozone bleaching process ZA924351B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US72195891A	1991-06-27	1991-06-27

Publications (1)

Publication Number	Publication Date
ZA924351B true ZA924351B (en)	1993-03-31

Family

ID=24899960

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA924351A ZA924351B (en)	1991-06-27	1992-06-15	Ozone bleaching process

Country Status (10)

Country	Link
US (1)	US5607545A (en)
EP (2)	EP0591264B1 (en)
JP (1)	JPH0781239B2 (en)
AU (1)	AU1973692A (en)
CA (1)	CA2102899C (en)
DE (2)	DE69230034T2 (en)
FI (1)	FI114719B (en)
MX (1)	MX9203303A (en)
WO (1)	WO1993000470A1 (en)
ZA (1)	ZA924351B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI89516B (en)	1989-05-10	1993-06-30	Ahlstroem Oy	Foerfarande Foer blekning av cellulosamassa med Otson
FI925558L (en) *	1992-04-22	1993-10-23	Ahlstroem Oy	FOERFARANDE OCH ANORDNING FOER BLEKNING AV MASS
CA2078276C (en) *	1992-09-15	2004-05-25	Derek Hornsey	Recovery of oxygen-rich gas from ozone bleaching processes
US6010594A (en) *	1993-03-03	2000-01-04	Ahlstrom Machinery Corporation	Method of bleaching pulp with chlorine-free chemicals wherein a complexing agent is added immediately after an ozone bleach stage
SE9301960L (en) *	1993-06-08	1994-07-25	Kvaerner Pulping Tech	Bleaching of chemical pulp with peroxide at overpressure
FR2719854B1 (en) *	1994-05-11	1996-06-21	Atochem Elf Sa	Process for the preparation of delignified and bleached chemical paper pulps.
SE9402542D0 (en) *	1994-07-20	1994-07-20	Kvaerner Pulping Tech	Method and apparatus for bleaching with pressurized peroxide
WO1996023929A1 (en) *	1995-01-31	1996-08-08	A. Ahlstrom Corporation	Bleaching pulp with peroxide at superatmospheric pressure and in multiple stages
FI103818B (en) *	1995-02-21	1999-09-30	Ahlstrom Machinery Oy	Pulp Bleaching Process
DE19622421A1 (en) *	1996-06-04	1997-12-11	Fraunhofer Ges Forschung	Process for processing waste wood
BR9708265A (en)	1996-03-26	1999-04-13	Sunds Defibrator Ind Ab	Two-stage chemical pulp oxygen delignification process
US5851407A (en) *	1996-12-04	1998-12-22	Applied Process Technolgy, Inc.	Process and apparatus for oxidation of contaminants in water
US6024882A (en) *	1997-08-08	2000-02-15	Applied Process Technology, Inc.	Process and apparatus for water decontamination
WO1999007642A1 (en) *	1997-08-08	1999-02-18	Applied Process Technology, Inc.	Process and apparatus for water decontamination
US20050173082A1 (en) *	1998-08-24	2005-08-11	Arbozon Oy Ltd.	Bleaching of medium consistency pulp with ozone without high shear mixing
SE9803474L (en) *	1998-10-08	2000-04-09	Valmet Fibertech Ab	Oxygen bleaching of pulp
SE522593C2 (en) *	1999-07-06	2004-02-24	Kvaerner Pulping Tech	Oxygen gas delignification system and method of pulp of lignocellulosic material
JP2002069879A (en) *	2000-09-04	2002-03-08	Nippon Paper Industries Co Ltd	Method for bleaching pulp of cellulosic fiber material
SE532470C2 (en) *	2008-05-13	2010-02-02	Metso Paper Inc	Final bleaching of oxygen delignified pulp with ozone, chlorine dioxide and peroxide
SE538752C2 (en) *	2014-11-21	2016-11-08	Innventia Ab	Process for the production of a treated pulp, treated pulp, and textile fibres produced from the treated pulp
US11131061B2 (en)	2017-12-20	2021-09-28	Unicharm Corporation	Method for manufacturing recycled pulp fibers

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI67413C (en) *	1977-04-27	1985-03-11	Myrens Verksted As	FOERFARANDE FOER BEHANDLING AV FINFOERDELAD FIBERHALTIG ELLER CELLULOSAHALTIG MASS SAMT ANORDNING FOER UTFOERANDE AV FOERFARANDET
NO144711C (en) *	1978-04-04	1981-10-21	Myrens Verksted As	PROCEDURE FOR BLACKING OXYGEN-EQUIVALIZED CELLULOSE-containing OZONE
DE3207157C1 (en) *	1982-02-27	1983-06-09	Degussa Ag, 6000 Frankfurt	Process for the production of semi-bleached cellulose
AT380496B (en) *	1984-06-27	1986-05-26	Steyrermuehl Papier	METHOD AND REACTOR FOR DELIGNIFYING CELLULAR WITH OXYGEN
FI79361B (en) *	1988-01-05	1989-08-31	Ahlstroem Oy	FOERFARANDE OCH APPARATUR FOER UNDERLAETTANDE AV UTTOEMNING AV FALLROER ELLER LIKNANDE OCH BEHANDLING AV MASSA I SAGDA UTRYMME.
US4902381A (en) *	1988-12-09	1990-02-20	Kamyr, Inc.	Method of bleaching pulp with ozone-chlorine mixtures
FI89516B (en) *	1989-05-10	1993-06-30	Ahlstroem Oy	Foerfarande Foer blekning av cellulosamassa med Otson
US5034095A (en) *	1989-06-01	1991-07-23	Oji Paper Co., Ltd.	Apparatus and process for the delignification of cellulose pulp
AU636173B2 (en) *	1989-10-30	1993-04-22	Lenzing Aktiengesellschaft	Method for the chlorine-free bleaching of pulps
US5141563A (en) *	1989-12-19	1992-08-25	Eltech Systems Corporation	Molten salt stripping of electrode coatings
AT393701B (en) *	1989-12-22	1991-12-10	Schmidding Wilh Gmbh & Co	METHOD FOR BLEACHING CELLULOSE-CONTAINING MATERIALS, AND SYSTEM FOR CARRYING OUT THE METHOD

1992
- 1992-06-15 ZA ZA924351A patent/ZA924351B/en unknown
- 1992-06-25 CA CA002102899A patent/CA2102899C/en not_active Expired - Fee Related
- 1992-06-25 WO PCT/FI1992/000198 patent/WO1993000470A1/en active IP Right Grant
- 1992-06-25 EP EP92911890A patent/EP0591264B1/en not_active Expired - Lifetime
- 1992-06-25 MX MX9203303A patent/MX9203303A/en unknown
- 1992-06-25 DE DE69230034T patent/DE69230034T2/en not_active Expired - Fee Related
- 1992-06-25 AU AU19736/92A patent/AU1973692A/en not_active Abandoned
- 1992-06-25 DE DE69204461T patent/DE69204461T2/en not_active Expired - Fee Related
- 1992-06-25 EP EP93114758A patent/EP0577157B1/en not_active Expired - Lifetime
- 1992-06-25 JP JP4511066A patent/JPH0781239B2/en not_active Expired - Fee Related
- 1992-08-27 US US07/935,334 patent/US5607545A/en not_active Expired - Lifetime
1993
- 1993-12-22 FI FI935784A patent/FI114719B/en active IP Right Review Request

Also Published As

Publication number	Publication date
AU1973692A (en)	1993-01-25
EP0591264A1 (en)	1994-04-13
EP0577157A3 (en)	1995-04-12
EP0591264B1 (en)	1995-08-30
FI935784L (en)	1993-12-22
CA2102899C (en)	2007-05-01
DE69230034D1 (en)	1999-10-28
EP0577157A2 (en)	1994-01-05
JPH0781239B2 (en)	1995-08-30
WO1993000470A1 (en)	1993-01-07
FI935784A0 (en)	1993-12-22
US5607545A (en)	1997-03-04
DE69204461T2 (en)	1996-03-07
DE69230034T2 (en)	2000-02-03
EP0577157B1 (en)	1999-09-22
DE69204461D1 (en)	1995-10-05
CA2102899A1 (en)	1992-12-28
JPH06502229A (en)	1994-03-10
MX9203303A (en)	1992-12-01
FI114719B (en)	2004-12-15

Publication	Publication Date	Title
ZA924351B (en)	1993-03-31	Ozone bleaching process
GB9105167D0 (en)	1991-04-24	Chemical process
GB9200758D0 (en)	1992-03-11	Chemical process
GB9125116D0 (en)	1992-01-22	Chemical process
GB9108387D0 (en)	1991-06-05	Washing process
GB9103743D0 (en)	1991-04-10	Laundry treatment product
IL103841A0 (en)	1993-04-04	Chemical process
GB9300867D0 (en)	1993-03-10	An improved bleaching process
EP0526710A3 (en)	1993-04-28	Process for bleaching alkylpolyglycosides
GB9211793D0 (en)	1992-07-15	Chemical process
GB9114611D0 (en)	1991-08-21	Bleaching process
ZA938707B (en)	1995-05-22	Bleaching process
GB9105166D0 (en)	1991-04-24	Chemical process
GB9213540D0 (en)	1992-08-12	Bleaching process
GB9111955D0 (en)	1991-07-24	Chemicals process
PL290847A1 (en)	1993-01-11	Ozone producing apparatus
GB9410796D0 (en)	1994-07-20	Ozone process
CS96591A3 (en)	1992-10-14	Bleaching agent
GB9112187D0 (en)	1991-07-24	Chemical process
GB9110592D0 (en)	1991-07-03	Chemical process
GB9112817D0 (en)	1991-07-31	Chemical process
GB9112832D0 (en)	1991-07-31	Chemical process
GB9112833D0 (en)	1991-07-31	Chemical process
GB9112860D0 (en)	1991-07-31	Chemical process
GB9112861D0 (en)	1991-07-31	Chemical process